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Does C4NP include the UBM/BLM? Is it necessary to purchase a separate license for the UBM/BLM process?

April 26, 2017BLM c4np license necessary process purchase separate ubm

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Does C4NP include the UBM/BLM? Is it necessary to purchase a separate license for the UBM/BLM process?

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1. C4NP does not include the UBM/BLM, but only provides the solder bump for the wafer. 2. Customers have a choice of providing their own UBM/BLM, or may use IBM’s recipe for the UBM by purchasing a separate license.